{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["product producer", "cause effect", "entity origin", "message topic"], "input": "the stapler comprises a stapling head ( 2 ) and an anvil ( 3 ) ."}
{"product producer": [], "cause effect": [], "entity origin": [], "message topic": []}